A good (the best, actually) formatter for Python logging.
https://pypi.python.org/pypi/best_log_formatter/
There is one class in this package: best_log_formatter.Formatter
Dates are all in UTC with millisecond precision.
2014-08-08T05:13:59,214+0000 name.of.logger INFO Status is nominal.
For multi-line messages, all lines after the first are indented with a tab character.
2014-08-08T05:13:59,214+0000 name.of.logger ERROR This is a multi-line message.